Ditto, no special way to store it. Though drying it is a good idea, I have just rinsed some materials and stored them damp. They eventually dry out. If you want to store it in a sealed container (plastic storage box, bucket with tight lid) I would make sure it is dry.
I bought a few 5g buckets from Home Depot with lids and all for a few bucks a bucket + lid. Filled each bucket a quarter full and left to dry over a week or so. Once dry I dumped all into one bucket and use other buckets for misc stuff now. Make sure you get it dry before you lid it as dark moist places can create mold and thats no fun dealing with down the road.
Thanks guys. I actually just came back from Walmart with their buckets from the hardware department. I'll be taking down the 75 for a little while, possibly a long while with how much I procrastinate, and will need a way to store 120 lbs of this stuff without molding/getting nasty.